Improvement in hair-clipping iviachines



2 S'heets Sheet 1.

GEORGE H. PRATT.

Improvement in Hair-clipping Machines. No.123-,50 8. Patented Feb. 6,1872.

2 Sheeis-Sheet 2. PRATT;

GEORGE H.

lmprevement in Hair- 7 a F 0. W

lml DAM lMPRQVEMENT IN HAIR-CLIPPING MACHINES.

Specification forming part of Letters Patent No: 123,508, dated February 6, 1872.

To whom it may concern:

Be it known that I, GEORGE H. PRATT, of Boston Highlands,in the county of Suffolk and Commonwealth of Massachusetts, have invented certain new and useful Improvements in Machinery for Clipping Hair, W001, 860.; and

do hereby declare the following to be a full,

clear, and exact description thereof, reference being had to the accompanying drawing makin g part of this specification, in which Figure l is a plan; Fig. 2, a side elevation; Fig. 3, an end elevation; and Fig. 4, a vertical section of a machine embodying my improvements.

My present invention relates to improvements in machinery for clipping hair or wool, or other substances, whereby a universal variable connection is obtained between the driving power and the cutter of the machine; the purpose of the invention being to enable such cutter to be properly presented, and the work of the machine to progress in any position in which it is possible to place either the machine or the cutter.

In the drawing the standard which supports the jointed mechanism for operating the cutter is shown at f. It is swiveled within a post interposed between it and the base g, and a suitable device is provided whereby the standard may be locked in any position throughout the circle which it is permitted to describe about the axis of the post. The swiveling of the standard enables the crane and its suspensories to be swung about, and thus carry the cutter from points considerably distant from one an other. The standard f is divided into two parts, a b, united by a tenon and socket connection, 0 and a spring, (1 in such manner that one may revolve within the other, and a short rotary movement may be obtained in order to permit the crane which supports the cutting mech anism to be swung laterally sufficiently to accommodate the cutter to short distances. The

spring offers a yielding resistance to this movement and causes the crane to return to its normal position. This post or standard may be used to advantage with any suitable cutting mechanism. Ipreferto usethatwhichis shown in the drawing. This mechanism is composed of a crane, '5, pivoted to the standard, as shown, carrying on one end a sliding equipoise-weight, k, and on the other end the devices for transmitting motion to the cutters, which may be described as follows: 13 is a short horizontal shaft mounted within a furcated head, I, making part of the crane 03', such shaft carrying at one end a pulley, in, about which and the pulley h an endless band it travels, the shaft B further carrying an upright beveled gearo on the inner face of the pulley m, meshing into and driving a beveled gear, 1), within the lower part of the head Z, this latter gearbein g affixed to the upper extremity of a journal, q,which extends through and revolves freely within the bottom or base 1" of the head, and constitutes the hub of onehalf or gimbal of a universal joint, 8, of wellknown construction, the lower gimbal of such joint being shown at tand the hub of the latter at u, this last-named hub being fixed to theupper extremity of a vertical shaft, 42, while to the lower extremityof such shaft a third beveled gear, 20, is secured. The beveled gear to meshes into and drives a fourth beveled gear, 00, which is mounted upon one end of a short horizontal arbor, y, this arbor, as well as the two last-named gears, being inclosed within a tubular case or box, 2, suspended from the lower end of the shaft o. Upon the opposite end of the arbor y is a short crank, a, while to the wrist-pin of this crank is pivoted the upper end of the connecting-rod c, this rod being carried downward through a tubular handle, 0, which is part of the head d of the tubular case 2. The pulley e drives the pulley h, and this latter pulley revolves the pulley m, while this last-named pulley rotates the shaft B and beveled gear 0. The gear 0, operatingthrough. the gear 19, rotates, through the agency of the universal joint 8, the shaft 02 while this shaft in its turn, by means of the gears w andw, puts in revolution the arbor 3 while, finally, this.

arbor, by its crank and connecting-rod, effects reciprocating movements of the cutters attached to or connected with such rod; therefore, by rotating the driving pulley e, the cutting portion of the machine is attached. The upright shaft 0 should be provided with abalance-wheel to equalize and steady its motion.

What I claim as my invention islower part b swiveled to the post or base upon The combination, with the crane i, which which it is supported, substantially as and for carries the jointed mechanism for imparting the purposes herein shown and set forth. movement to the cutter of the standard f, com- 7 GEORGE H. PRATT. posed of the two parts a b, the one tenoned into the other, and held together by the spring Witnesses: strip (1, which permits a motion of the up- FRED. CURTIS, per part independently of the lower, and the EDW. GRIFFITH. 

